How does the Hubble Space Telescope work?
Despite early problems the Hubble telescope a shuttle space mission was sent to repair the telescope and fit an optical fix known a ‘Costar’. The mirror had been ground with an error in the measurement system and ever since has been a fantastic success. It was given major overhaul earlier this year in one of the last shuttle missions and is to be replaced by the James Webb Space Telescope (JWST)in the next decade.
